Terahertz wave generating device which outputs a terahertz frequency electromagnetic wave via Cherenkov phase matching

摘要

An electromagnetic wave emission device includes a nonlinear crystal which receives exciting light Lp having two wavelength components λ1 and λ2, and outputs terahertz waves L1-L6, a total reflection layer which is in contact with the nonlinear crystal, and totally reflects the terahertz waves L2, L4, and L6 output from the nonlinear crystal, a substrate which mounts the total reflection layer, and top clads which are placed on an opposing surface of the nonlinear crystal, and transmit the terahertz waves L1-L6.